Conformal normal curvature and assessment of local influence
Source: Journal of the Royal Statistical Society: Series B (Statistical Methodology), Volume 61, Number 1, 1999 , pp. 51-61(11)
Abstract:In 1986, R. D. Cook proposed differential geometry to assess local influence of minor perturbations of statistical models. We construct a conformally invariant curvature, the conformal normal curvature, for the same purpose. This curvature provides a measure of local influence ranging from 0 to 1, with objective bench-marks to judge largeness. We study various approaches to using the conformal normal curvature and the relationships between these approaches.
Document Type: Original Article
Publication date: January 1, 1999